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(-) Description

Title :  COMPLEX OF RAD18 (RAD6 BINDING DOMAIN) WITH RAD6B
 
Authors :  R. G. Hibbert, T. K. Sixma
Date :  08 Mar 11  (Deposition) - 20 Apr 11  (Release) - 20 Apr 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Ligase, E2 Ubiquitin Conjugating Enzyme, E3 Ubiquitin Ligase, Translesion Synthesis, Pcna Ubiquitination (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  R. G. Hibbert, A. Huang, R. Boelens, T. K. Sixma
E3 Ligase Rad18 Promotes Monoubiquitination Rather Than Ubiquitin Chain Formation By E2 Enzyme Rad6.
Proc. Natl. Acad. Sci. Usa V. 108 5590 2011
PubMed-ID: 21422291  |  Reference-DOI: 10.1073/PNAS.1017516108

(-) Compounds

Molecule 1 - UBIQUITIN-CONJUGATING ENZYME E2 B
    ChainsA
    EC Number6.3.2.19
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System VectorPET28A
    Expression System Vector TypePLASMID
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymRAD6 HOMOLOG B, HR6B, HHR6B, UBIQUITIN CARRIER PROTEIN B, UBIQUITIN-CONJUGATING ENZYME E2-17 KDA, UBIQUITIN-PROTEIN LIGASE B, RAD6B
 
Molecule 2 - E3 UBIQUITIN-PROTEIN LIGASE RAD18
    ChainsB
    EC Number6.3.2.-
    FragmentRAD6-BINDING DOMAIN, RESIDUES 340-366
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymPOSTREPLICATION REPAIR PROTEIN RAD18, HHR18, HRAD18, RING FINGER PROTEIN 73
    SyntheticYES

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 4)

Asymmetric/Biological Unit (3, 4)
No.NameCountTypeFull Name
1BME1Ligand/IonBETA-MERCAPTOETHANOL
2NA1Ligand/IonSODIUM ION
3SO42Ligand/IonSULFATE ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREPHE A:13 , CYS A:88 , GLN A:93 , ASN A:94BINDING SITE FOR RESIDUE BME A1153
2AC2SOFTWAREARG A:7 , ARG A:8 , ARG A:11 , NA A:1155 , HOH A:2001BINDING SITE FOR RESIDUE SO4 A1154
3AC3SOFTWAREARG A:11 , SO4 A:1154 , HOH A:2006BINDING SITE FOR RESIDUE NA A1155
4AC4SOFTWARELYS B:341 , TYR B:342 , ARG B:343BINDING SITE FOR RESIDUE SO4 B1362

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2YBF)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Tyr A:63 -Pro A:64

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2YBF)

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1UBIQUITIN_CONJUGAT_2PS50127 Ubiquitin-conjugating enzymes family profile.UBE2B_HUMAN7-139  1A:7-139
2UBIQUITIN_CONJUGAT_1PS00183 Ubiquitin-conjugating enzymes active site.UBE2B_HUMAN77-92  1A:77-92

(-) Exons   (6, 6)

Asymmetric/Biological Unit (6, 6)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1aENST000002653391aENSE00001042376chr5:133706870-133707330461UBE2B_HUMAN1-15151A:3-1513
1.2aENST000002653392aENSE00000953701chr5:133710074-13371015481UBE2B_HUMAN15-42281A:15-4228
1.3ENST000002653393ENSE00001042373chr5:133712360-13371238526UBE2B_HUMAN42-51101A:42-5110
1.4ENST000002653394ENSE00000803566chr5:133716410-13371649990UBE2B_HUMAN51-81311A:51-8131
1.6bENST000002653396bENSE00000763369chr5:133724016-13372410489UBE2B_HUMAN81-110301A:81-11030
1.8gENST000002653398gENSE00000803567chr5:133725916-1337276831768UBE2B_HUMAN111-152421A:111-15242

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:150
 aligned with UBE2B_HUMAN | P63146 from UniProtKB/Swiss-Prot  Length:152

    Alignment length:150
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152
          UBE2B_HUMAN     3 TPARRRLMRDFKRLQEDPPVGVSGAPSENNIMQWNAVIFGPEGTPFEDGTFKLVIEFSEEYPNKPPTVRFLSKMFHPNVYADGSICLDILQNRWSPTYDVSSILTSIQSLLDEPNPNSPANSQAAQLYQENKREYEKRVSAIVEQSWNDS 152
               SCOP domains d2ybfa_ A: Ubiquitin conjugating enzyme, UBC                                                                                                           SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains -----UQ_con-2ybfA01 A:8-145                                                                                                                    ------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhh....eeeeee..eeeeeeeeee..........eeeeeee..........eeee................hhhhh.......hhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) ----UBIQUITIN_CONJUGAT_2  PDB: A:7-139 UniProt: 7-139                                                                                    ------------- PROSITE (1)
                PROSITE (2) --------------------------------------------------------------------------UBIQUITIN_CONJUG------------------------------------------------------------ PROSITE (2)
           Transcript 1 (1) Exon 1.1a    --------------------------Exon 1.3  -----------------------------Exon 1.6b  PDB: A:81-110      Exon 1.8g  PDB: A:111-152 UniProt: 111-152 Transcript 1 (1)
           Transcript 1 (2) ------------Exon 1.2a  PDB: A:15-42     --------Exon 1.4  PDB: A:51-81         ----------------------------------------------------------------------- Transcript 1 (2)
                 2ybf A   3 TPARRRLMRDFKRLQEDPPVGVSGAPSENNIMQWNAVIFGPEGTPFEDGTFKLVIEFSEEYPNKPPTVRFLSKMFHPNVYADGSICLDILQNRWSPTYDVSSILTSIQSLLDEPNPNSPANSQAAQLYQENKREYEKRVSAIVEQSWNDS 152
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152

Chain B from PDB  Type:PROTEIN  Length:21
 aligned with RAD18_HUMAN | Q9NS91 from UniProtKB/Swiss-Prot  Length:495

    Alignment length:21
                                   350       360 
          RAD18_HUMAN   341 KYRKKHKSEFQLLVDQARKGY 361
               SCOP domains --------------------- SCOP domains
               CATH domains --------------------- CATH domains
               Pfam domains --------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) --------------------- SAPs(SNPs)
                    PROSITE --------------------- PROSITE
                 Transcript --------------------- Transcript
                 2ybf B 341 KYRKKHKSEFQLLVDQARKGY 361
                                   350       360 

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2YBF)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: UBC (69)

(-) Gene Ontology  (67, 82)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (UBE2B_HUMAN | P63146)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
    GO:0061631    ubiquitin conjugating enzyme activity    Isoenergetic transfer of ubiquitin from one protein to another via the reaction X-ubiquitin + Y -> Y-ubiquitin + X, where both the X-ubiquitin and Y-ubiquitin linkages are thioester bonds between the C-terminal glycine of ubiquitin and a sulfhydryl side group of a cysteine residue.
    GO:0061630    ubiquitin protein ligase activity    Catalysis of the transfer of ubiquitin to a substrate protein via the reaction X-ubiquitin + S -> X + S-ubiquitin, where X is either an E2 or E3 enzyme, the X-ubiquitin linkage is a thioester bond, and the S-ubiquitin linkage is an amide bond: an isopeptide bond between the C-terminal glycine of ubiquitin and the epsilon-amino group of lysine residues in the substrate or, in the linear extension of ubiquitin chains, a peptide bond the between the C-terminal glycine and N-terminal methionine of ubiquitin residues.
    GO:0031625    ubiquitin protein ligase binding    Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
    GO:0004842    ubiquitin-protein transferase activity    Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
biological process
    GO:0042769    DNA damage response, detection of DNA damage    The series of events required to receive a stimulus indicating DNA damage has occurred and convert it to a molecular signal.
    GO:0006281    DNA repair    The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
    GO:0060070    canonical Wnt signaling pathway    The series of molecular signals initiated by binding of a Wnt protein to a frizzled family receptor on the surface of the target cell, followed by propagation of the signal via beta-catenin, and ending with a change in transcription of target genes. In this pathway, the activated receptor signals via downstream effectors that result in the inhibition of beta-catenin phosphorylation, thereby preventing degradation of beta-catenin. Stabilized beta-catenin can then accumulate and travel to the nucleus to trigger changes in transcription of target genes.
    GO:0006974    cellular response to DNA damage stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
    GO:0051026    chiasma assembly    The cell cycle process in which a connection between chromatids assembles, indicating where an exchange of homologous segments has taken place by the crossing-over of non-sister chromatids.
    GO:0033522    histone H2A ubiquitination    The modification of histone H2A by addition of one or more ubiquitin groups.
    GO:0070076    histone lysine demethylation    The modification of a histone by the removal of a methyl group from a lysine residue.
    GO:0001701    in utero embryonic development    The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth. An example of this process is found in Mus musculus.
    GO:0006344    maintenance of chromatin silencing    The maintenance of chromatin in a transcriptionally silent state such as heterochromatin.
    GO:0045141    meiotic telomere clustering    The cell cycle process in which the dynamic reorganization of telomeres occurs in early meiotic prophase, during which meiotic chromosome ends are gathered in a bouquet arrangement at the inner surface of the nuclear envelope proximal to the spindle pole body. This plays an important role in progression through meiosis and precedes synapsis.
    GO:0043066    negative regulation of apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
    GO:0043951    negative regulation of cAMP-mediated signaling    Any process which stops, prevents, or reduces the frequency, rate or extent of cAMP-mediated signaling, a series of molecular signals in which a cell uses cyclic AMP to convert an extracellular signal into a response.
    GO:0033128    negative regulation of histone phosphorylation    Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of one or more phosphate groups to a histone protein.
    GO:0010845    positive regulation of reciprocal meiotic recombination    Any process that increases the frequency, rate or extent of recombination during meiosis. Reciprocal meiotic recombination is the cell cycle process in which double strand breaks are formed and repaired through a double Holliday junction intermediate.
    GO:0006301    postreplication repair    The conversion of DNA-damage induced single-stranded gaps into large molecular weight DNA after replication. Includes pathways that remove replication-blocking lesions in conjunction with DNA replication.
    GO:0043161    proteasome-mediated ubiquitin-dependent protein catabolic process    The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
    GO:0070979    protein K11-linked ubiquitination    A protein ubiquitination process in which ubiquitin monomers are attached to a protein, and then ubiquitin polymers are formed by linkages between lysine residues at position 11 of the ubiquitin monomers. K11-linked polyubiquitination targets the substrate protein for degradation. The anaphase-promoting complex promotes the degradation of mitotic regulators by assembling K11-linked polyubiquitin chains.
    GO:0070936    protein K48-linked ubiquitination    A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is added to a protein. K48-linked ubiquitination targets the substrate protein for degradation.
    GO:0070534    protein K63-linked ubiquitination    A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair.
    GO:0051865    protein autoubiquitination    The ubiquitination by a protein of one or more of its own amino acid residues, or residues on an identical protein. Ubiquitination occurs on the lysine residue by formation of an isopeptide crosslink.
    GO:0006513    protein monoubiquitination    Addition of a single ubiquitin group to a protein.
    GO:0000209    protein polyubiquitination    Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.
    GO:0050821    protein stabilization    Any process involved in maintaining the structure and integrity of a protein and preventing it from degradation or aggregation.
    GO:0016567    protein ubiquitination    The process in which one or more ubiquitin groups are added to a protein.
    GO:0031056    regulation of histone modification    Any process that modulates the frequency, rate or extent of the covalent alteration of a histone.
    GO:0009411    response to UV    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ultraviolet radiation (UV light) stimulus. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.
    GO:0042493    response to drug    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
    GO:0007288    sperm axoneme assembly    The assembly and organization of the sperm flagellar axoneme, the bundle of microtubules and associated proteins that forms the core of the eukaryotic sperm flagellum, and is responsible for movement.
    GO:0007283    spermatogenesis    The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
    GO:0070193    synaptonemal complex organization    A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a synaptonemal complex. A synaptonemal complex is a proteinaceous scaffold formed between homologous chromosomes during meiosis.
    GO:0006511    ubiquitin-dependent protein catabolic process    The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of a ubiquitin group, or multiple ubiquitin groups, to the protein.
cellular component
    GO:0033503    HULC complex    A ubiquitin-conjugating enzyme complex that contains two RING finger proteins, which have ubiquitin ligase activity, in addition to a protein with ubiquitin-conjugating enzyme activity; catalyzes the ubiquitination of histone H2B at lysine 119 (or the equivalent residue). In Schizosaccharomyces the subunits are Rhp1, Brl2/Rfp1 and Brl1/Rfp2.
    GO:0001741    XY body    A structure found in a male mammalian spermatocyte containing an unpaired X chromosome that has become densely heterochromatic, silenced and localized at the nuclear periphery.
    GO:0000785    chromatin    The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0000790    nuclear chromatin    The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0005657    replication fork    The Y-shaped region of a replicating DNA molecule, resulting from the separation of the DNA strands and in which the synthesis of new strands takes place. Also includes associated protein complexes.

Chain B   (RAD18_HUMAN | Q9NS91)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0000403    Y-form DNA binding    Interacting selectively and non-covalently with segment of DNA shaped like a Y. This shape occurs when DNA contains a region of paired double-stranded DNA on one end and a region of unpaired DNA strands on the opposite end.
    GO:0003684    damaged DNA binding    Interacting selectively and non-covalently with damaged DNA.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0016874    ligase activity    Catalysis of the joining of two substances, or two groups within a single molecule, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0031593    polyubiquitin modification-dependent protein binding    Interacting selectively and non-covalently with a protein upon poly-ubiquitination of the target protein.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0032403    protein complex binding    Interacting selectively and non-covalently with any protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0043142    single-stranded DNA-dependent ATPase activity    Catalysis of the reaction: ATP + H2O = ADP + phosphate; this reaction requires the presence of single-stranded DNA, and it drives another reaction.
    GO:0061630    ubiquitin protein ligase activity    Catalysis of the transfer of ubiquitin to a substrate protein via the reaction X-ubiquitin + S -> X + S-ubiquitin, where X is either an E2 or E3 enzyme, the X-ubiquitin linkage is a thioester bond, and the S-ubiquitin linkage is an amide bond: an isopeptide bond between the C-terminal glycine of ubiquitin and the epsilon-amino group of lysine residues in the substrate or, in the linear extension of ubiquitin chains, a peptide bond the between the C-terminal glycine and N-terminal methionine of ubiquitin residues.
    GO:0031625    ubiquitin protein ligase binding    Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0042769    DNA damage response, detection of DNA damage    The series of events required to receive a stimulus indicating DNA damage has occurred and convert it to a molecular signal.
    GO:0006281    DNA repair    The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
    GO:0006974    cellular response to DNA damage stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
    GO:0060548    negative regulation of cell death    Any process that decreases the rate or frequency of cell death. Cell death is the specific activation or halting of processes within a cell so that its vital functions markedly cease, rather than simply deteriorating gradually over time, which culminates in cell death.
    GO:0051984    positive regulation of chromosome segregation    Any process that activates or increases the frequency, rate or extent of chromosome segregation, the process in which genetic material, in the form of chromosomes, is organized and then physically separated and apportioned to two or more sets.
    GO:0006301    postreplication repair    The conversion of DNA-damage induced single-stranded gaps into large molecular weight DNA after replication. Includes pathways that remove replication-blocking lesions in conjunction with DNA replication.
    GO:0051865    protein autoubiquitination    The ubiquitination by a protein of one or more of its own amino acid residues, or residues on an identical protein. Ubiquitination occurs on the lysine residue by formation of an isopeptide crosslink.
    GO:0006513    protein monoubiquitination    Addition of a single ubiquitin group to a protein.
    GO:0016567    protein ubiquitination    The process in which one or more ubiquitin groups are added to a protein.
    GO:0009411    response to UV    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ultraviolet radiation (UV light) stimulus. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.
cellular component
    GO:0097505    Rad6-Rad18 complex    A ubiquitin ligase complex found to be involved in post-replicative bypass of UV-damaged DNA and UV mutagenesis. In S. cerevisiae, the complex contains the ubiquitin conjugating enzyme Rad6 and Rad18, a protein containing a RING finger motif and a nucleotide binding motif. The yeast Rad6-Rad18 heterodimer has ubiquitin conjugating activity, binds single-stranded DNA, and possesses single-stranded DNA-dependent ATPase activity.
    GO:0005813    centrosome    A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005856    cytoskeleton    Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
    GO:0005815    microtubule organizing center    An intracellular structure that can catalyze gamma-tubulin-dependent microtubule nucleation and that can anchor microtubules by interacting with their minus ends, plus ends or sides.
    GO:0042405    nuclear inclusion body    An intranuclear focus at which aggregated proteins have been sequestered.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
    GO:0005657    replication fork    The Y-shaped region of a replicating DNA molecule, resulting from the separation of the DNA strands and in which the synthesis of new strands takes place. Also includes associated protein complexes.
    GO:0035861    site of double-strand break    A region of a chromosome at which a DNA double-strand break has occurred. DNA damage signaling and repair proteins accumulate at the lesion to respond to the damage and repair the DNA to form a continuous DNA helix.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

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        RAD18_HUMAN | Q9NS912mre 2mrf 2y43 5vf0
        UBE2B_HUMAN | P631461jas 1nxa 2y4w 2yb6

(-) Related Entries Specified in the PDB File

1jas HSUBC2B
1nxa HOMOLOGY MODELED UBIQUITIN-PROTEIN LIGASE B
2y43 RAD18 UBIQUITIN LIGASE RING DOMAIN STRUCTURE
2y4w SOLUTION STRUCTURE OF HUMAN UBIQUITIN CONJUGATING ENZYME RAD6B
2yb6 NATIVE HUMAN RAD6